Automatic sewing device with a sewing head including a rotary ho

Details Automatic sewing device with a sewing head including a rotary ho Automatic sewing device with a sewing head including a rotary ho

1987-07-08

1988-11-29

Falik, Andrew M.

Sewing

Special machines

Darning

112220, 112259, 112309, D05B 2100

Patent

active

047873248

ABSTRACT:
At an automatic sewing device the sewing head for generating a tangential movement of the needle feed movement relative to the seam to be produced is provided with a rotary housing for receiving a needle bar, a needle jogging mechanism and a thread take-up lever drive, and a rotatable hook bearing for receiving a hook. In order to achieve constant stitch lengths even when the rotary housing and hook bearing are swivelled, the main drive shaft for the stitch forming instruments and the adjusting shaft for the rotary housing and the hook bearing are coupled via a differential gear in such a manner that at rotations of the adjusting shaft a swivelling motion is imparted to the main drive shaft, which acts against changes of the position of the needle bar, the needle jogging mechanism, the thread take-up lever drive and the hook.

REFERENCES:
patent: 2203804 (1940-06-01), Essen
patent: 4373458 (1983-02-01), Dorosz et al.
patent: 4553489 (1985-11-01), Landwehr
patent: 4574718 (1986-03-01), Scholl et al.
patent: 4719864 (1988-01-01), Barrett et al.

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